Thermal Engineering Questions and Answers – Brayton Cycle

This set of Thermal Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Brayton Cycle”.

1. Gas turbine works on _____
a) Dual cycle
b) Otto cycle
c) Brayton cycle
d) Diesel cycle
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2. The compression ratio (r) of dual cycle is equal to _________
a) r = volume of the cylinder at the beginning of the compression/volume of the cylinder at the end of the compression
b) r = volume of the cylinder at the end of the compression/ volume of the cylinder at the beginning of the compression
c) r = clearance volume/ volume of the cylinder at the beginning of the compression
d) r = volume of the cylinder at the end of the compression/clearance volume
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3. For same maximum pressure and heat input, most efficient cycle is _________
a) Dual cycle
b) Rankine cycle
c) Brayton cycle
d) Diesel cycle
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4. Which of the following methods cannot be used to increase the efficiency of brayton cycle?
a) Decreasing pressure ratio
b) Increasing pressure ratio
c) Regeneration
d) Heat exchanger
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5. In a brayton cycle heat addition takes place __________
a) At constant volume process
b) At constant pressure process
c) First at constant volume then at constant pressure process
d) First at constant pressure then at constant volume process
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6. In a brayton cycle heat rejection takes place ____
a) At constant volume process
b) At constant pressure process
c) First at constant volume then at constant pressure process
d) First at constant pressure then at constant volume process
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7. In brayton cycle regenerator is placed between __________
a) Turbine and heat exchanger
b) Turbine and intercooler
c) Compressor and intercooler
d) Compressor and heat exchanger
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8. Reheating will _______ the efficiency of brayton cycle.
a) Decreases
b) Increases
c) Zero
d) Remain same
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9. If regeneration is also used along with reheating the efficiency will _____
a) Decreases
b) Increases
c) Zero
d) Remain same
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10. What is the effect of regeneration in brayton cycle work output?
a) Work output increases
b) Work output decreases
c) Work output becomes zero
d) Work output doesn’t change
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11. In how many stages the compression process is divided in intercooling?
a) One
b) Two
c) Three
d) Five
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12. Reheat and regeneration in combination used to increases ________
a) Net work output
b) Efficiency
c) Both net work output and efficiency
d) Doesn’t change net work output and efficiency
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13. Intercooling and regeneration in combination used to increases _________
a) Net work output
b) Efficiency
c) Doesn’t change net work output and efficiency
d) Both net work output and efficiency
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Sanfoundry Global Education & Learning Series – Thermal Engineering

To practice all areas of Thermal Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.

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